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<li class="navelem"><a class="el" href="../../d2/d75/namespacecv.html">cv</a></li><li class="navelem"><a class="el" href="../../d4/d20/classcv_1_1AsyncArray.html">AsyncArray</a></li>  </ul>
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<div class="title">cv::AsyncArray Class Reference<div class="ingroups"><a class="el" href="../../d0/de1/group__core.html">Core functionality</a> » <a class="el" href="../../da/d57/group__core__async.html">Asynchronous API</a></div></div>  </div>
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<p>Returns result of asynchronous operations.  
 <a href="../../d4/d20/classcv_1_1AsyncArray.html#details">More...</a></p>
<p><code>#include &lt;opencv2/core/async.hpp&gt;</code></p>
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<tr class="heading"><td colspan="2"><h2 class="groupheader"><a name="pub-methods"></a>
Public Member Functions</h2></td></tr>
<tr class="memitem:ab70c3efa65213c3a099d7fec44c4c8cc"><td align="right" class="memItemLeft" valign="top"> </td><td class="memItemRight" valign="bottom"><a class="el" href="../../d4/d20/classcv_1_1AsyncArray.html#ab70c3efa65213c3a099d7fec44c4c8cc">AsyncArray</a> () <a class="el" href="../../db/de0/group__core__utils.html#ga7b88772bee40b329b585a3a2157abd9b">CV_NOEXCEPT</a></td></tr>
<tr class="separator:ab70c3efa65213c3a099d7fec44c4c8cc"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:a31c5119610da24ab47a4eb117b77e8f1"><td align="right" class="memItemLeft" valign="top"> </td><td class="memItemRight" valign="bottom"><a class="el" href="../../d4/d20/classcv_1_1AsyncArray.html#a31c5119610da24ab47a4eb117b77e8f1">AsyncArray</a> (const <a class="el" href="../../d4/d20/classcv_1_1AsyncArray.html">AsyncArray</a> &amp;o) <a class="el" href="../../db/de0/group__core__utils.html#ga7b88772bee40b329b585a3a2157abd9b">CV_NOEXCEPT</a></td></tr>
<tr class="separator:a31c5119610da24ab47a4eb117b77e8f1"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:a6334d8263cc68bfb4c2bdced8630430f"><td align="right" class="memItemLeft" valign="top"> </td><td class="memItemRight" valign="bottom"><a class="el" href="../../d4/d20/classcv_1_1AsyncArray.html#a6334d8263cc68bfb4c2bdced8630430f">~AsyncArray</a> () <a class="el" href="../../db/de0/group__core__utils.html#ga7b88772bee40b329b585a3a2157abd9b">CV_NOEXCEPT</a></td></tr>
<tr class="separator:a6334d8263cc68bfb4c2bdced8630430f"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:a37f487035cbbb3db1387df20b99ce870"><td align="right" class="memItemLeft" valign="top">void * </td><td class="memItemRight" valign="bottom"><a class="el" href="../../d4/d20/classcv_1_1AsyncArray.html#a37f487035cbbb3db1387df20b99ce870">_getImpl</a> () const <a class="el" href="../../db/de0/group__core__utils.html#ga7b88772bee40b329b585a3a2157abd9b">CV_NOEXCEPT</a></td></tr>
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<tr class="memitem:aca6c8dda8353ab799a815b15d55668d4"><td align="right" class="memItemLeft" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="../../d4/d20/classcv_1_1AsyncArray.html#aca6c8dda8353ab799a815b15d55668d4">get</a> (<a class="el" href="../../dc/d84/group__core__basic.html#gaad17fda1d0f0d1ee069aebb1df2913c0">OutputArray</a> dst) const</td></tr>
<tr class="separator:aca6c8dda8353ab799a815b15d55668d4"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:a8e3e3d872948cb28033949f982f43e73"><td align="right" class="memItemLeft" valign="top">bool </td><td class="memItemRight" valign="bottom"><a class="el" href="../../d4/d20/classcv_1_1AsyncArray.html#a8e3e3d872948cb28033949f982f43e73">get</a> (<a class="el" href="../../dc/d84/group__core__basic.html#gaad17fda1d0f0d1ee069aebb1df2913c0">OutputArray</a> dst, <a class="el" href="../../d1/d1b/group__core__hal__interface.html#ga7cde0074dfd288f2d70c0e035dacb28a">int64</a> timeoutNs) const</td></tr>
<tr class="separator:a8e3e3d872948cb28033949f982f43e73"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:ac5c9a55c7b0dbbcee98979f212e478f5"><td align="right" class="memItemLeft" valign="top">bool </td><td class="memItemRight" valign="bottom"><a class="el" href="../../d4/d20/classcv_1_1AsyncArray.html#ac5c9a55c7b0dbbcee98979f212e478f5">get</a> (<a class="el" href="../../dc/d84/group__core__basic.html#gaad17fda1d0f0d1ee069aebb1df2913c0">OutputArray</a> dst, double timeoutNs) const</td></tr>
<tr class="separator:ac5c9a55c7b0dbbcee98979f212e478f5"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:a13709e8c99dac446a1c1ed71798eee72"><td align="right" class="memItemLeft" valign="top"><a class="el" href="../../d4/d20/classcv_1_1AsyncArray.html">AsyncArray</a> &amp; </td><td class="memItemRight" valign="bottom"><a class="el" href="../../d4/d20/classcv_1_1AsyncArray.html#a13709e8c99dac446a1c1ed71798eee72">operator=</a> (const <a class="el" href="../../d4/d20/classcv_1_1AsyncArray.html">AsyncArray</a> &amp;o) <a class="el" href="../../db/de0/group__core__utils.html#ga7b88772bee40b329b585a3a2157abd9b">CV_NOEXCEPT</a></td></tr>
<tr class="separator:a13709e8c99dac446a1c1ed71798eee72"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:a801cbd8a4db7b4d2e01a8c7a37acdb0f"><td align="right" class="memItemLeft" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="../../d4/d20/classcv_1_1AsyncArray.html#a801cbd8a4db7b4d2e01a8c7a37acdb0f">release</a> () <a class="el" href="../../db/de0/group__core__utils.html#ga7b88772bee40b329b585a3a2157abd9b">CV_NOEXCEPT</a></td></tr>
<tr class="separator:a801cbd8a4db7b4d2e01a8c7a37acdb0f"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:a309514ce0d50e1529054d6f7e9cc23e2"><td align="right" class="memItemLeft" valign="top">bool </td><td class="memItemRight" valign="bottom"><a class="el" href="../../d4/d20/classcv_1_1AsyncArray.html#a309514ce0d50e1529054d6f7e9cc23e2">valid</a> () const <a class="el" href="../../db/de0/group__core__utils.html#ga7b88772bee40b329b585a3a2157abd9b">CV_NOEXCEPT</a></td></tr>
<tr class="separator:a309514ce0d50e1529054d6f7e9cc23e2"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:a528a789936be2fa2ca653eac775a9586"><td align="right" class="memItemLeft" valign="top">bool </td><td class="memItemRight" valign="bottom"><a class="el" href="../../d4/d20/classcv_1_1AsyncArray.html#a528a789936be2fa2ca653eac775a9586">wait_for</a> (<a class="el" href="../../d1/d1b/group__core__hal__interface.html#ga7cde0074dfd288f2d70c0e035dacb28a">int64</a> timeoutNs) const</td></tr>
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<tr class="memitem:a2ed03ffc2454d6741f5fac876b8e3c04"><td align="right" class="memItemLeft" valign="top">bool </td><td class="memItemRight" valign="bottom"><a class="el" href="../../d4/d20/classcv_1_1AsyncArray.html#a2ed03ffc2454d6741f5fac876b8e3c04">wait_for</a> (double timeoutNs) const</td></tr>
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<tr class="heading"><td colspan="2"><h2 class="groupheader"><a name="pro-attribs"></a>
Protected Attributes</h2></td></tr>
<tr class="memitem:a3c627df1f79609c31cfb83c1044e9d25"><td align="right" class="memItemLeft" valign="top"><a class="el" href="../../d4/d20/classcv_1_1AsyncArray.html#aee24c43b9029c5fba6fb8747c948c0da">Impl</a> * </td><td class="memItemRight" valign="bottom"><a class="el" href="../../d4/d20/classcv_1_1AsyncArray.html#a3c627df1f79609c31cfb83c1044e9d25">p</a></td></tr>
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Friends</h2></td></tr>
<tr class="memitem:aee24c43b9029c5fba6fb8747c948c0da"><td align="right" class="memItemLeft" valign="top">struct </td><td class="memItemRight" valign="bottom"><a class="el" href="../../d4/d20/classcv_1_1AsyncArray.html#aee24c43b9029c5fba6fb8747c948c0da">Impl</a></td></tr>
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</table>
<a id="details" name="details"></a><h2 class="groupheader">Detailed Description</h2>
<div class="textblock"><p>Returns result of asynchronous operations. </p>
<p>Object has attached asynchronous state. Assignment operator doesn't clone asynchronous state (it is shared between all instances).</p>
<p>Result can be fetched via <a class="el" href="../../d4/d20/classcv_1_1AsyncArray.html#aca6c8dda8353ab799a815b15d55668d4">get()</a> method only once. </p>
<dl><dt><b>Examples: </b></dt><dd><a class="el" href="../../d4/db9/samples_2dnn_2object_detection_8cpp-example.html#_a22">samples/dnn/object_detection.cpp</a>.</dd>
</dl></div><h2 class="groupheader">Constructor &amp; Destructor Documentation</h2>
<a id="a6334d8263cc68bfb4c2bdced8630430f"></a>
<h2 class="memtitle"><span class="permalink"><a href="#a6334d8263cc68bfb4c2bdced8630430f">◆ </a></span>~AsyncArray()</h2>
<div class="memitem">
<div class="memproto">
      <table class="memname">
        <tr>
          <td class="memname">cv::AsyncArray::~AsyncArray </td>
          <td>(</td>
          <td class="paramname"></td><td>)</td>
          <td></td>
        </tr>
      </table>
</div><div class="memdoc">
</div>
</div>
<a id="ab70c3efa65213c3a099d7fec44c4c8cc"></a>
<h2 class="memtitle"><span class="permalink"><a href="#ab70c3efa65213c3a099d7fec44c4c8cc">◆ </a></span>AsyncArray() <span class="overload">[1/2]</span></h2>
<div class="memitem">
<div class="memproto">
      <table class="memname">
        <tr>
          <td class="memname">cv::AsyncArray::AsyncArray </td>
          <td>(</td>
          <td class="paramname"></td><td>)</td>
          <td></td>
        </tr>
      </table><table class="python_language"><tr><th colspan="999" style="text-align:left">Python:</th></tr><tr><td style="width: 20px;"></td><td>&lt;AsyncArray object&gt;</td><td>=</td><td>cv.AsyncArray(</td><td class="paramname"></td><td>)</td></tr></table>
</div><div class="memdoc">
</div>
</div>
<a id="a31c5119610da24ab47a4eb117b77e8f1"></a>
<h2 class="memtitle"><span class="permalink"><a href="#a31c5119610da24ab47a4eb117b77e8f1">◆ </a></span>AsyncArray() <span class="overload">[2/2]</span></h2>
<div class="memitem">
<div class="memproto">
      <table class="memname">
        <tr>
          <td class="memname">cv::AsyncArray::AsyncArray </td>
          <td>(</td>
          <td class="paramtype">const <a class="el" href="../../d4/d20/classcv_1_1AsyncArray.html">AsyncArray</a> &amp; </td>
          <td class="paramname"><em>o</em></td><td>)</td>
          <td></td>
        </tr>
      </table><table class="python_language"><tr><th colspan="999" style="text-align:left">Python:</th></tr><tr><td style="width: 20px;"></td><td>&lt;AsyncArray object&gt;</td><td>=</td><td>cv.AsyncArray(</td><td class="paramname"></td><td>)</td></tr></table>
</div><div class="memdoc">
</div>
</div>
<h2 class="groupheader">Member Function Documentation</h2>
<a id="a37f487035cbbb3db1387df20b99ce870"></a>
<h2 class="memtitle"><span class="permalink"><a href="#a37f487035cbbb3db1387df20b99ce870">◆ </a></span>_getImpl()</h2>
<div class="memitem">
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<table class="mlabels">
  <tr>
  <td class="mlabels-left">
      <table class="memname">
        <tr>
          <td class="memname">void* cv::AsyncArray::_getImpl </td>
          <td>(</td>
          <td class="paramname"></td><td>)</td>
          <td> const</td>
        </tr>
      </table>
  </td>
  <td class="mlabels-right">
<span class="mlabels"><span class="mlabel">inline</span></span>  </td>
  </tr>
</table>
</div><div class="memdoc">
</div>
</div>
<a id="aca6c8dda8353ab799a815b15d55668d4"></a>
<h2 class="memtitle"><span class="permalink"><a href="#aca6c8dda8353ab799a815b15d55668d4">◆ </a></span>get() <span class="overload">[1/3]</span></h2>
<div class="memitem">
<div class="memproto">
      <table class="memname">
        <tr>
          <td class="memname">void cv::AsyncArray::get </td>
          <td>(</td>
          <td class="paramtype"><a class="el" href="../../dc/d84/group__core__basic.html#gaad17fda1d0f0d1ee069aebb1df2913c0">OutputArray</a> </td>
          <td class="paramname"><em>dst</em></td><td>)</td>
          <td> const</td>
        </tr>
      </table><table class="python_language"><tr><th colspan="999" style="text-align:left">Python:</th></tr><tr><td style="width: 20px;"></td><td>dst</td><td>=</td><td>cv.AsyncArray.get(</td><td class="paramname">[, dst]</td><td>)</td></tr><tr><td style="width: 20px;"></td><td>retval, dst</td><td>=</td><td>cv.AsyncArray.get(</td><td class="paramname">timeoutNs[, dst]</td><td>)</td></tr></table>
</div><div class="memdoc">
<p>Fetch the result. </p><dl class="params"><dt>Parameters</dt><dd>
  <table class="params">
    <tr><td class="paramdir">[out]</td><td class="paramname">dst</td><td>destination array</td></tr>
  </table>
  </dd>
</dl>
<p>Waits for result until container has valid result. Throws exception if exception was stored as a result.</p>
<p>Throws exception on invalid container state.</p>
<dl class="section note"><dt>Note</dt><dd>Result or stored exception can be fetched only once. </dd></dl>
<dl><dt><b>Examples: </b></dt><dd><a class="el" href="../../d4/db9/samples_2dnn_2object_detection_8cpp-example.html#a23">samples/dnn/object_detection.cpp</a>.</dd>
</dl>
</div>
</div>
<a id="a8e3e3d872948cb28033949f982f43e73"></a>
<h2 class="memtitle"><span class="permalink"><a href="#a8e3e3d872948cb28033949f982f43e73">◆ </a></span>get() <span class="overload">[2/3]</span></h2>
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          <td class="memname">bool cv::AsyncArray::get </td>
          <td>(</td>
          <td class="paramtype"><a class="el" href="../../dc/d84/group__core__basic.html#gaad17fda1d0f0d1ee069aebb1df2913c0">OutputArray</a> </td>
          <td class="paramname"><em>dst</em>, </td>
        </tr>
        <tr>
          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype"><a class="el" href="../../d1/d1b/group__core__hal__interface.html#ga7cde0074dfd288f2d70c0e035dacb28a">int64</a> </td>
          <td class="paramname"><em>timeoutNs</em> </td>
        </tr>
        <tr>
          <td></td>
          <td>)</td>
          <td></td><td> const</td>
        </tr>
      </table><table class="python_language"><tr><th colspan="999" style="text-align:left">Python:</th></tr><tr><td style="width: 20px;"></td><td>dst</td><td>=</td><td>cv.AsyncArray.get(</td><td class="paramname">[, dst]</td><td>)</td></tr><tr><td style="width: 20px;"></td><td>retval, dst</td><td>=</td><td>cv.AsyncArray.get(</td><td class="paramname">timeoutNs[, dst]</td><td>)</td></tr></table>
</div><div class="memdoc">
<p>Retrieving the result with timeout </p><dl class="params"><dt>Parameters</dt><dd>
  <table class="params">
    <tr><td class="paramdir">[out]</td><td class="paramname">dst</td><td>destination array </td></tr>
    <tr><td class="paramdir">[in]</td><td class="paramname">timeoutNs</td><td>timeout in nanoseconds, -1 for infinite wait</td></tr>
  </table>
  </dd>
</dl>
<dl class="section return"><dt>Returns</dt><dd>true if result is ready, false if the timeout has expired</dd></dl>
<dl class="section note"><dt>Note</dt><dd>Result or stored exception can be fetched only once. </dd></dl>
</div>
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          <td class="memname">bool cv::AsyncArray::get </td>
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          <td class="paramtype"><a class="el" href="../../dc/d84/group__core__basic.html#gaad17fda1d0f0d1ee069aebb1df2913c0">OutputArray</a> </td>
          <td class="paramname"><em>dst</em>, </td>
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</table><table class="python_language"><tr><th colspan="999" style="text-align:left">Python:</th></tr><tr><td style="width: 20px;"></td><td>dst</td><td>=</td><td>cv.AsyncArray.get(</td><td class="paramname">[, dst]</td><td>)</td></tr><tr><td style="width: 20px;"></td><td>retval, dst</td><td>=</td><td>cv.AsyncArray.get(</td><td class="paramname">timeoutNs[, dst]</td><td>)</td></tr></table>
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<h2 class="memtitle"><span class="permalink"><a href="#a13709e8c99dac446a1c1ed71798eee72">◆ </a></span>operator=()</h2>
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          <td class="memname"><a class="el" href="../../d4/d20/classcv_1_1AsyncArray.html">AsyncArray</a>&amp; cv::AsyncArray::operator= </td>
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<h2 class="memtitle"><span class="permalink"><a href="#a801cbd8a4db7b4d2e01a8c7a37acdb0f">◆ </a></span>release()</h2>
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          <td> const</td>
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          <td class="memname">bool cv::AsyncArray::wait_for </td>
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          <td class="paramtype"><a class="el" href="../../d1/d1b/group__core__hal__interface.html#ga7cde0074dfd288f2d70c0e035dacb28a">int64</a> </td>
          <td class="paramname"><em>timeoutNs</em></td><td>)</td>
          <td> const</td>
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      </table><table class="python_language"><tr><th colspan="999" style="text-align:left">Python:</th></tr><tr><td style="width: 20px;"></td><td>retval</td><td>=</td><td>cv.AsyncArray.wait_for(</td><td class="paramname">timeoutNs</td><td>)</td></tr></table>
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          <td class="paramtype">double </td>
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<h2 class="groupheader">Friends And Related Function Documentation</h2>
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<h2 class="memtitle"><span class="permalink"><a href="#aee24c43b9029c5fba6fb8747c948c0da">◆ </a></span>Impl</h2>
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<h2 class="groupheader">Member Data Documentation</h2>
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          <td class="memname"><a class="el" href="../../d4/d20/classcv_1_1AsyncArray.html#aee24c43b9029c5fba6fb8747c948c0da">Impl</a>* cv::AsyncArray::p</td>
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<hr/>The documentation for this class was generated from the following file:<ul>
<li>opencv2/core/<a class="el" href="../../d5/d2c/async_8hpp.html">async.hpp</a></li>
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